++++Main Loop Menu|
^   [[/develop/legacy/program_guide/main_loop_pg|Main Loop Guide]]  ^^^^^
|       [[/develop/legacy/program_guide/main_loop/timers|Timers]]    |   [[/develop/legacy/program_guide/main_loop/animators|Animators]]    |   [[/develop/legacy/program_guide/main_loop/file_descriptors|File Descriptors]]    |   [[/develop/legacy/program_guide/main_loop/threads|Threads]]    |   [[/develop/legacy/program_guide/main_loop/idlers|Idlers]]     |
++++